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Off the Zanzibar coast, Chumbe Island champions marine conservation

Off the Zanzibar coast, Chumbe Island champions marine conservation

NOAA scientists are warning that warm ocean temperatures in the tropical Pacific and Indian Oceans could set the stage for major coral bleaching events across the globe in 2015.

NOAA scientists are warning that warm ocean temperatures in the tropical Pacific and Indian Oceans could set the stage for major coral bleaching events across the globe in 2015.

Climate Change Impacts Countered By Stricter Fisheries Management.

Climate Change Impacts Countered By Stricter Fisheries Management.

SHARK Bay and the coastline off Karratha and Perth may be popular eateries for whale sharks (Rhincodon typus), satellite tracking has revealed.

SHARK Bay and the coastline off Karratha and Perth may be popular eateries for whale sharks (Rhincodon typus), satellite tracking has revealed.

Exmouth split over pipeline factory proposed for gulf that supports Ningaloo Reef.

Reef fisheries can continue to provide food and income despite corals being lost to climate change, according to new research conducted in the Seychelles.

Environment ministry carries out campaign to protect coral reefs in Oman.

Off Tanzania, in one of the world's richest seas, why is the catch getting smaller?

Live Broadcasters Spotted a Shark During the Broadcast.

Warming coral reefs are losing their capacity to feed themselves from sunlight, making nutritious deep ocean water critical for their survival, according to a University of Queensland study.

Off the Seychelles, a dive into a never-seen landscape.

The adaptation of tropical coral communities to the world's hottest sea, the Persian/Arabian Gulf (PAG), has recently been associated with ecological selection acting on a group of coral-associated algal symbionts, the Symbiodinium thermophilum group. Previous studies have shown that considerable genetic diversity exists within the group and that group members found within the PAG are significantly differentiated from those found externally, in the Gulf of Oman and wider waters. However, little is known about this genetic diversity. As an initial step towards understanding whether this diversity could represent niche adapted, selectable populations within the S. thermophilum group that may act as natural sources of stress tolerant associations to Indo-Pacific reefs, we investigate whether the diversity is structured between populations and where the location of the internal-external genetic partition lies. We use regions of the nuclear ribosomal DNA (ITS1-5.8S-ITS2) and chloroplastic psbA gene (non-coding region) from >100 S. thermophilum group-harbouring Porites spp. (P. lobata, P. lutea, and P. harrisoni) sampled across steep temperature and salinity gradients to conduct analyses of variance and create maximum parsimony networks to assess genetic structure and (dis)similarity within and between populations of S. thermophilum found within the PAG and externally in the Gulf of Oman. Our analyses resolve a sharp genetic boundary between Symbiodinium populations in the western Strait of Hormuz and identify significant genetic structure between populations with as little as 20 km between them demonstrating that differentiation between populations is likely due to factors other than limited connectivity. Further, we hypothesize that genotypes identified outside of the PAG in the Gulf of Oman existing in near-oceanic salinities, yet thermally challenging waters, putatively represent candidates for stress-tolerant symbionts that could act as natural seed populations of st

Why should we try to protect the coral reefs?

Repeat coral bleaching caused by rising sea temperatures has resulted in lasting changes to fish communities, according to a new long-term study in the Seychelles.

Study shows severe loss of central Indian Ocean coral reefs between 2015 and 2017.

Study shows dramatic loss of central Indian Ocean coral reefs between 2015 and 2017.

A new study from The Australian National University (ANU) has shown the impact phosphate mining is having on our coral reefs.

More than 80 marine scientists join together to identify key social-environmental pressures and human impacts on coral reefs The authors recommend "protect, recover, and transform" strategies to save and protect coral reefs More than 2,500 reef systems across 44 countries were analyzed